That's a nice game. I enjoy playing it (not done all the levels)
+ Concept is simple but lead to a great complexity
+ Take on the theme : I don't see it like you explain, but I think you fit the theme, because you must often re-use blocks and so do more with less.
+ Atmosphere : Music fit well with your game.
+ multiple ways to solve level
- Polish: There is a lack of animation I think. You could use tricks to give more life without spending to mush time on animation. A classic trick is to squizze your character/block to re-inforce the movements.
Great job !
Suggestion:
- Igloo as the exit (instead of a star) would be more relevant with your universe.
- Check https://jokubasg.itch.io/drive-out, you share the same core concept but the games have really different moods.